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參數(shù)資料
| 型號(hào)： | LTC2604CGN#PBF |
| 廠商： | Linear Technology |
| 文件頁(yè)數(shù)： | 3/16頁(yè) |
| 文件大?。?/td> | 0K |
| 描述： | IC DAC 16BIT QUAD R-R OUT 16SSOP |
| 標(biāo)準(zhǔn)包裝： | 100 |
| 設(shè)置時(shí)間： | 10µs |
| 位數(shù)： | 16 |
| 數(shù)據(jù)接口： | 串行 |
| 轉(zhuǎn)換器數(shù)目： | 4 |
| 電壓電源： | 單電源 |
| 功率耗散（最大）： | 10mW |
| 工作溫度： | 0°C ~ 70°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 16-SSOP（0.154"，3.90mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 16-SSOP |
| 包裝： | 管件 |
| 輸出數(shù)目和類型： | 4 電壓，單極 |
| 采樣率（每秒）： | * |
| 產(chǎn)品目錄頁(yè)面： | 1351 (CN2011-ZH PDF) |
| 配用： | DC809A-ND - BOARD DAC LTC2604 |
第1頁(yè)第2頁(yè)當(dāng)前第3頁(yè)第4頁(yè)第5頁(yè)第6頁(yè)第7頁(yè)第8頁(yè)第9頁(yè)第10頁(yè)第11頁(yè)第12頁(yè)第13頁(yè)第14頁(yè)第15頁(yè)第16頁(yè)
LTC2604/LTC2614/LTC2624
11
2604fd
OPERATION
C3
COMMAND
ADDRESS
DATA (12 BITS + 4 DON’T-CARE BITS)
C2
C1
C0
A3
A2
A1
A0
D11 D10 D9
D8
D7 D6
D5
D4
D3
D2
D1 D0
X
XX
2604 TBL03
MSB
LSB
C3
COMMAND
ADDRESS
DATA (14 BITS + 2 DON’T-CARE BITS)
C2
C1
C0
A3
A2
A1
A0
D13 D12 D11 D10 D9
D8
D7 D6
D5
D4
D3
D2
D1 D0
X
2604 TBL02
MSB
LSB
C3
COMMAND
ADDRESS
DATA (16 BITS)
C2
C1
C0
A3
A2
A1
A0
D13
D14
D15
D12 D11 D10 D9
D8
D7 D6
D5
D4
D3
D2
D1 D0
2604 TBL01
MSB
LSB
INPUT WORD (LTC2604)
INPUT WORD (LTC2614)
INPUT WORD (LTC2624)
Power Supply Sequencing
The voltage at REF (Pins 3, 6, 12 and 15) should be kept
within the range – 0.3V ≤ REF x ≤ VCC + 0.3V (see Abso-
lute Maximum Ratings). Particular care should be taken
to observe these limits during power supply turn-on and
turn-off sequences, when the voltage at VCC (Pin 16) is
in transition.
Transfer Function
The digital-to-analog transfer function is
VOUT(IDEAL) =
k
2
N
[REF x – REFLO]+REFLO
where k is the decimal equivalent of the binary DAC input
code, N is the resolution and REF x is the voltage at REF
A, REF B, REF C and REF D (Pins 3, 6, 12 and 15).
Serial Interface
The CS/LD input is level triggered. When this input is taken
low, it acts as a chip-select signal, powering-on the SDI
and SCK buffers and enabling the input shift register. Data
(SDI input) is transferred at the next 24 rising SCK edges.
The 4-bit command, C3-C0, is loaded rst; then the 4-bit
DAC address, A3-A0; and nally the 16-bit data word. The
data word comprises the 16-, 14- or 12-bit input code,
ordered MSB-to-LSB, followed by 0, 2 or 4 don’t-care bits
(LTC2604, LTC2614 and LTC2624 respectively). Data can
only be transferred to the device when the CS/LD signal
is low. The rising edge of CS/LD ends the data transfer
and causes the device to carry out the action specied in
the 24-bit input word. The complete sequence is shown
in Figure 2a.
The command (C3-C0) and address (A3-A0) assignments
are shown in Table 1. The rst four commands in the table
consist of write and update operations. A write operation
loads a 16-bit data word from the 32-bit shift register
into the input register of the selected DAC, n. An update
Table 1.
COMMAND*
C3
C2
C1
C0
0
Write to Input Register n
0
1
Update (Power Up) DAC Register n
0
1
0
Write to Input Register n, Update (Power Up) All n
0
1
Write to and Update (Power Up) n
0
1
0
Power Down n
1
No Operation
ADDRESS (n)*
A3
A2
A1
A0
0
DAC A
0
1
DAC B
0
1
0
DAC C
0
1
DAC D
1
All DACs
*Command and address codes not shown are reserved and should not
be used.
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